Improvement in wrought-iron columns



c. H. KELLUGG. Wrought Iron Columns.

Patented July 21,1874.

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onAnLns H. KELLOGG, on BUFFALO, NEW YORK.

IMPROVEMENT IN WROUGHT-IRON COLUMNS.

Specification forming part of Letters Patent No. 153,170. dated July 21,1874; application filed June 19, 1874.

To all whom it may concern:

Be it known that 1, CHARLES HENRY KEL- LOGG, of Bufialo, in the countyof Erie and State of New York, have invented certain Improvements inWrought Iron Columns, of which the following is a specification:

The invention relates to a wrought-iron column for viaducts, piers,bridgebuilding, &c.; and the invention consists in its construct-ion, ashereinafter fully explained.

The drawing represents a plan of a transverse section of my column.

AAAAreprcsent a series of channel-bars or upright sections composing thewrought-iron column. These columns, however, may be composed of three,four, or more channel-bars, as may be desired,'the drawing showing oneconstructed in four sections. The web a of each of these channel-bars iscurved inwardly, substantially as shown, and their sides have formed onthem the usual flange I). These channel-bars, when joined by rivetingthe webs together, as shown at c a, form a column hollow in the center,and with complete broad flanges, substantially as shown.

The advantages of this peculiarly-constructed column are, that itcombines the greatest amount of strength in a comparatively small space,which also allows a simpler and cheaper construction than most columnsfor similar purposes with which I am acquainted. Furthermore, it isespecially adapted for via-ducts, as the broad-faced flanges b I) give asquare face for fastening thereto laterals and struts, thereby doingaway with cast-iron joint-blocks. This is an important advantage.

I-am' acquainted with patented columns constructed of outwardly-curvedsections, and also with square uprights or sides, their flanges joinedtogether, but none formed like mine, and the webs riveted as shown.

I claim- A wrought-iron column composed of three or more channel-bars, AA, curved inwardly, and their webs a a riveted together at 0, each sideof each channel-bar having a flange, which, when united, forms acomplete flange, b, as and for the purposes hereinafter specifled.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses. g

CHARLES H. KELLOGG. \Vitnesses:

J. R. DRAKE, T. H. PARSONS.

